Modules

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A Mendix project consists of modules: a System module and one or more user-defined modules. Modules are a way to split the functionality of your application into separate parts. For example, a web shop can put order management in a different module than customer and product management. The Modeler does not enforce any kind of module structure; it is up to you to choose logical modules for your application.

A module always contains exactly one domain model. The domain model is a data model that describes the information in your application domain in an abstract way.

Within a module you can define module security via module roles and specify security settings of those module roles for pages, microflows, entities and data sets.

Furthermore, a module can contain many different types of documents. Each type of document is described in its own domain-specific language (DSL). For example, user-interface forms are described by using a visual language with elements like text boxes, tables and grids. Below you see tables grouped by category of all the different kinds of documents you can create within a module.

Common

Document type Typical elements Description
Pages Data view, Data grid, Table, Text box Forms are used to create a user interface for the end user. They are composed of components that are called widgets.
Microflows Activities, Sequence Flow Microflows describe the the logic of your application. They are composed of activities that manipulate objects, interact with the client etcetera.
Enumerations An enumeration is a set of predefined values, for example: in a webshop, an enumeration called MemberType could have the values Gold and Silver.
Consumed App Services App services are the preferred way of connecting Mendix applications to each other. An app service can be imported and its content can be used.

Page Resources

Document type Description
Images Images can be used to brighten up your application. Navigation items and the various kinds of buttons have small images (icons) to left of their captions.
Layouts Layouts specify what comes where. Each page is based on a layout. The layout contains widgets and structures that return on every page based on that layout.
Menus A menu document defines a navigation menu that can be used by a menu widget.
Snippets Snippets define reusable interface parts. They can be used on pages and layouts .

Resources

Document type Description
Constants Constants are used to define a constant value, for example: to store an URL to a webservice.
Data Sets A data set can be used for reporting and is defined using either an OQL query or a custom Java action.
Document Templates Document Templates are used to model a template needed as input for a document export action which can generate all kinds of documents based on application data. They are composed much in the same way as Forms.
Java Actions With Java actions you can extend the functionality of your application in situations where it would be hard to implement this functionality in microflows. You can call a Java action from a microflow.
Regular Expressions A regular expression describes a set of criteria that a string can match.
Rules A rule defines a set of criteria, with a certain input the rule will result in a boolean or enumeration depending on the criteria met. It can be called from an exclusive split to determine the direction the microflow should go once the exclusive split is reached.
Scheduled Events A scheduled event is used to execute a microflow at a certain point in time. You can also schedule it to repeat after a given time. For example, a scheduled event can run every morning at 6 A.M.

Consumed Services

Document type Description
Consumed Web Services Importing web services of other applications (Mendix or otherwise) allows you to call those web services from your microflows.
A domain-to-XML mapping defines a translation from domain model objects to XML objects.
An XML-to-domain mapping defines a translation from XML objects to domain model objects.
XML Schemas An XML schema is defined in an XML Schema Definition (XSD) file and can be imported in your model. It describes what a certain XML document should look like.

Published Services

Document type Description
Published App Services A microflow can be published an an app service action so that it can be consumed by other Mendix applications.
Published OData Services Persistent entities can be exposed as an OData resource, so that they can be imported by third-party applications such as Excel.
Published Web Services A microflow can be published as a web service operation so that it can be called by third-party applications.

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